这是一个模拟调度程序，通过读取文件的到达时间调度进程，模拟轮转r=1的调度策略，里面的process是进程执行，通过它，调度时输出相关调度信息-This is a simulation of scheduling procedures, read the document through the scheduling process of the arrival time, analog rotation r = 1 of the scheduling strategy, which is th